webui: display title changes in the timeline

webui/src/bug/SetTitle.js

@@ -0,0 +1,43 @@
+import { withStyles } from '@material-ui/core/styles'
+import gql from 'graphql-tag'
+import React from 'react'
+import Author from '../Author'
+import Date from '../Date'
+
+const styles = theme => ({
+  main: {
+    ...theme.typography.body2
+  },
+  bold: {
+    fontWeight: 'bold'
+  }
+})
+
+const SetTitle = ({op, classes}) => {
+  return (
+    <div className={classes.main}>
+      <Author author={op.author} bold />
+      <span> changed the title from </span>
+      <span className={classes.bold}>{op.was}</span>
+      <span> to </span>
+      <span className={classes.bold}>{op.title}</span>
+      <Date date={op.date} />
+    </div>
+  )
+}
+
+SetTitle.fragment = gql`
+  fragment SetTitle on Operation {
+    ... on SetTitleOperation {
+      date
+      author {
+        name
+        email
+      }
+      title
+      was
+    }
+  }
+`
+
+export default withStyles(styles)(SetTitle)

webui/src/bug/Timeline.js

@@ -2,6 +2,7 @@ import { withStyles } from '@material-ui/core/styles'
 import React from 'react'
 import LabelChange from './LabelChange'
 import Message from './Message'
+import SetTitle from './SetTitle'
 
 const styles = theme => ({
   main: {
@@ -32,6 +33,8 @@ class Timeline extends React.Component {
               return <Message key={index} op={op}/>
             case 'LabelChangeOperation':
               return <LabelChange key={index} op={op}/>
+            case 'SetTitleOperation':
+              return <SetTitle key={index} op={op}/>
 
             default:
               console.log('unsupported operation type ' + op.__typename)

webui/src/bug/TimelineQuery.js

@@ -3,6 +3,7 @@ import gql from 'graphql-tag'
 import React from 'react'
 import { Query } from 'react-apollo'
 import LabelChange from './LabelChange'
+import SetTitle from './SetTitle'
 import Timeline from './Timeline'
 import Message from './Message'
 
@@ -15,6 +16,7 @@ const QUERY = gql`
             ...Create
             ...Comment
             ...LabelChange
+            ...SetTitle
           }
           pageInfo {
             hasNextPage
@@ -27,6 +29,7 @@ const QUERY = gql`
   ${Message.createFragment}
   ${Message.commentFragment}
   ${LabelChange.fragment}
+  ${SetTitle.fragment}
 `
 
 const TimelineQuery = ({id}) => (